const CHINA_DATE_FORMAT = "yyyy-MM-dd hh:mm:ss";
const ALL_BLOCKS = ["frontPage", "loginInAndRegister", "about"];

/*********时间相关处理********/
/**
 * @param fmt 目标格式
 * @param date 当前日期
 */
function dateFormat(fmt, date) { //author: meizz
    let o = {
        "M+": date.getMonth() + 1,     //月份
        "d+": date.getDate(),     //日
        "h+": date.getHours(),     //小时
        "m+": date.getMinutes(),     //分
        "s+": date.getSeconds(),     //秒
        "q+": Math.floor((date.getMonth() + 3) / 3), //季度
        "S": date.getMilliseconds()    //毫秒
    };
    if (/(y+)/.test(fmt))
        fmt = fmt.replace(RegExp.$1, (date.getFullYear() + "").substr(4 - RegExp.$1.length));
    for (let k in o)
        if (new RegExp("(" + k + ")").test(fmt))
            fmt = fmt.replace(RegExp.$1, (RegExp.$1.length === 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
    return fmt;
}

/**************模块的互斥显示************/
function displayModify(displayed) {
    for (let block of ALL_BLOCKS) {
        if (block === displayed) {
            document.getElementById(block).style.display = "";
        } else {
            document.getElementById(block).style.display = "none";
        }
    }
}